The supporting powers of time air and of the wind depend on the shape of the surfaces used, and the best forms can only be evolved by free flight through the air.


The Romance of Aeronautics (1912)

Otto Lilienthal Quotes

The supporting powers of time air and of the wind depend on the shape of the surfaces used, and the best forms can only be evolved by free flight...

The supporting powers of time air and of the wind depend on the shape of the surfaces used, and the best forms can only be evolved by free flight...

The supporting powers of time air and of the wind depend on the shape of the surfaces used, and the best forms can only be evolved by free flight...

The supporting powers of time air and of the wind depend on the shape of the surfaces used, and the best forms can only be evolved by free flight...